Transport phenomena in La0.8Ba0.2MnO3 single crystal: evidence for activation to mobility edge

Authors
Ustinov, VV Bebenin, NG Zainullina, RI Mashkautsan, VV Gaviko, VS Mukovskii, YM Shulyatev, DA Vassiliev, VG
Citation
Vv. Ustinov et al., Transport phenomena in La0.8Ba0.2MnO3 single crystal: evidence for activation to mobility edge, J MAGN MAGN, 226, 2001, pp. 911-913
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
226
Year of publication
2001
Part
1
Pages
911 - 913
Database
ISI
SICI code
0304-8853(200105)226:<911:TPILSC>2.0.ZU;2-H
Abstract
We have studied the magnetic and transport properties of La0.8Ba0.2MnO3 sin gle crystal over temperature range 77-400 K in magnetic fields up to 15 kOe . Near the Curie temperature, both the resistivity. the thermopower. and th e normal Hall coefficient R-0 reach the maximal value, R-0 > 0 and the Hall mobility is constant. The data indicate that the holes activated to mobili ty edge dominate in conduction. The singlesite polaron picture is inconsist ent with our data on magneto resistance and magnetothermopower. (C) 2001 El sevier Science B.V. All rights reserved.